C10-40 Isoalkylamidopropylethyldimonium Ethosulfate

Benefits
Hair Structure ImprovementAntistaticHair Gloss

What is C10-40 Isoalkylamidopropylethyldimonium Ethosulfate?

C10-40 Isoalkylamidopropylethyldimonium Ethosulfate is a quaternary ammonium salt, a type of cationic surfactant synthesized from long-chain isoalkyl amides (C10 to C40 carbon lengths) linked to a propylethyldimonium positively charged headgroup, paired with an ethosulfate counterion. It appears in rinse-off hair care items like conditioners and leave-in treatments. This ingredient works through electrostatic attraction to the negatively charged hair surface, where it adheres and spreads to create a protective, hydrophobic layer. This layer reduces inter-fiber friction, neutralizes static charge by boosting conductivity, and aligns hair cuticles for a smoother texture, aiding detangling and styling.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 3 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.
Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.

Benefits

Enhances hair structure for improved smoothness and comb-through.

Reduces static electricity to minimize flyaways and frizz.

Boosts hair gloss by promoting even light reflection.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People with dry, frizzy, or static-prone hair.
Users sensitive to quaternary ammonium compounds.
Individuals using daily conditioners for better manageability.
People preferring preservative-free or quat-free formulations.
Those seeking shine without heavy residue in hair products.
Individuals with scalp irritation from similar conditioning agents.

Safety Notes

  • Low comedogenic rating indicates minimal pore-clogging risk.
  • Considered safe for typical rinse-off cosmetic use.

Frequently Asked Questions about C10-40 Isoalkylamidopropylethyldimonium Ethosulfate

What does this ingredient do in hair products?

It acts as an antistatic and conditioning agent, reducing friction and static for smoother, shinier hair.

Is it suitable for sensitive skin?

It has a low irritation profile in rinse-off products, but patch test if sensitive to quats.

Does it work on all hair types?

Its variable chain lengths suit various hair textures, aiding manageability across types.